Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 12,591	$ 128
Restricted cash	931	958
Accounts receivable:
Trade, net of allowance of $2,600 and $4,280, respectively	104,641	116,540
Retainage	40,109	42,547
Other current	1,930	2,680
Income taxes receivable	1,154	962
Inventory	1,229	1,114
Costs and estimated earnings in excess of billings on uncompleted contracts	31,433	41,389
Prepaid expenses and other	4,874	5,647
Total current assets	198,892	211,965
Property and equipment, net of depreciation	129,115	132,348
Operating lease right-of-use assets, net of amortization	17,715	17,997
Financing lease right-of-use assets, net of amortization	15,608	7,896
Inventory, non-current	7,140	7,037
Intangible assets, net of amortization	11,631	12,147
Deferred income tax asset	80	85
Other non-current	4,639	5,369
Total assets	384,820	394,844
Current liabilities:
Current debt, net of debt issuance costs	4,040	3,668
Accounts payable:
Trade	47,255	70,421
Retainage	817	562
Accrued liabilities	17,547	16,966
Income taxes payable	1,245	1,523
Billings in excess of costs and estimated earnings on uncompleted contracts	53,412	48,781
Current portion of operating lease liabilities	5,174	5,043
Current portion of financing lease liabilities	4,567	2,788
Total current liabilities	134,057	149,752
Long-term debt, net of debt issuance costs	66,030	68,029
Operating lease liabilities	13,211	13,596
Financing lease liabilities	9,227	3,760
Other long-term liabilities	19,831	20,436
Deferred income tax liability	213	205
Interest rate swap liability	2,029	1,045
Total liabilities	244,598	256,823
Stockholders? equity:
Preferred stock -- $0.01 par value, 10,000,000 authorized, none issued	0	0
Common stock -- $0.01 par value, 50,000,000 authorized, 30,485,400 and 30,303,395 issued; 29,774,169 and 29,592,164 outstanding at March 31, 2020 and December 31, 2019, respectively	305	303
Treasury stock, 711,231 shares, at cost, as of March 31, 2020 and December 31, 2019, respectively	(6,540)	(6,540)
Other comprehensive loss	(2,029)	(1,045)
Additional paid-in capital	182,983	182,523
Retained earnings	(34,497)	(37,220)
Total stockholders' equity	140,222	138,021
Total liabilities and stockholders? equity	$ 384,820	$ 394,844